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  <title>Module: ActionController::Assertions::DomAssertions</title>
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          <td><strong>Module</strong></td>
          <td class="class-name-in-header">ActionController::Assertions::DomAssertions</td>
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            <td><strong>In:</strong></td>
            <td>
                <a href="../../../files/vendor/rails/actionpack/lib/action_controller/assertions/dom_assertions_rb.html">
                vendor/rails/actionpack/lib/action_controller/assertions/dom_assertions.rb
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      <h3 class="section-bar">Methods</h3>

      <div class="name-list">
      <a href="#M001004">assert_dom_equal</a>&nbsp;&nbsp;
      <a href="#M001005">assert_dom_not_equal</a>&nbsp;&nbsp;
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      <h3 class="section-bar">Public Instance methods</h3>

      <div id="method-M001004" class="method-detail">
        <a name="M001004"></a>

        <div class="method-heading">
          <a href="#M001004" class="method-signature">
          <span class="method-name">assert_dom_equal</span><span class="method-args">(expected, actual, message = &quot;&quot;)</span>
          </a>
        </div>
      
        <div class="method-description">
          <p>
Test two HTML strings for equivalency (e.g., identical up to reordering of
attributes)
</p>
<h4>Examples</h4>
<pre>
  # assert that the referenced method generates the appropriate HTML string
  assert_dom_equal '&lt;a href=&quot;http://www.example.com&quot;&gt;Apples&lt;/a&gt;', link_to(&quot;Apples&quot;, &quot;http://www.example.com&quot;)
</pre>
          <p><a class="source-toggle" href="#"
            onclick="toggleCode('M001004-source');return false;">[Source]</a></p>
          <div class="method-source-code" id="M001004-source">
<pre>
    <span class="ruby-comment cmt"># File vendor/rails/actionpack/lib/action_controller/assertions/dom_assertions.rb, line 11</span>
11:       <span class="ruby-keyword kw">def</span> <span class="ruby-identifier">assert_dom_equal</span>(<span class="ruby-identifier">expected</span>, <span class="ruby-identifier">actual</span>, <span class="ruby-identifier">message</span> = <span class="ruby-value str">&quot;&quot;</span>)
12:         <span class="ruby-identifier">clean_backtrace</span> <span class="ruby-keyword kw">do</span>
13:           <span class="ruby-identifier">expected_dom</span> = <span class="ruby-constant">HTML</span><span class="ruby-operator">::</span><span class="ruby-constant">Document</span>.<span class="ruby-identifier">new</span>(<span class="ruby-identifier">expected</span>).<span class="ruby-identifier">root</span>
14:           <span class="ruby-identifier">actual_dom</span>   = <span class="ruby-constant">HTML</span><span class="ruby-operator">::</span><span class="ruby-constant">Document</span>.<span class="ruby-identifier">new</span>(<span class="ruby-identifier">actual</span>).<span class="ruby-identifier">root</span>
15:           <span class="ruby-identifier">full_message</span> = <span class="ruby-identifier">build_message</span>(<span class="ruby-identifier">message</span>, <span class="ruby-value str">&quot;&lt;?&gt; expected to be == to\n&lt;?&gt;.&quot;</span>, <span class="ruby-identifier">expected_dom</span>.<span class="ruby-identifier">to_s</span>, <span class="ruby-identifier">actual_dom</span>.<span class="ruby-identifier">to_s</span>)
16: 
17:           <span class="ruby-identifier">assert_block</span>(<span class="ruby-identifier">full_message</span>) { <span class="ruby-identifier">expected_dom</span> <span class="ruby-operator">==</span> <span class="ruby-identifier">actual_dom</span> }
18:         <span class="ruby-keyword kw">end</span>
19:       <span class="ruby-keyword kw">end</span>
</pre>
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      <div id="method-M001005" class="method-detail">
        <a name="M001005"></a>

        <div class="method-heading">
          <a href="#M001005" class="method-signature">
          <span class="method-name">assert_dom_not_equal</span><span class="method-args">(expected, actual, message = &quot;&quot;)</span>
          </a>
        </div>
      
        <div class="method-description">
          <p>
The negated form of <tt>assert_dom_equivalent</tt>.
</p>
<h4>Examples</h4>
<pre>
  # assert that the referenced method does not generate the specified HTML string
  assert_dom_not_equal '&lt;a href=&quot;http://www.example.com&quot;&gt;Apples&lt;/a&gt;', link_to(&quot;Oranges&quot;, &quot;http://www.example.com&quot;)
</pre>
          <p><a class="source-toggle" href="#"
            onclick="toggleCode('M001005-source');return false;">[Source]</a></p>
          <div class="method-source-code" id="M001005-source">
<pre>
    <span class="ruby-comment cmt"># File vendor/rails/actionpack/lib/action_controller/assertions/dom_assertions.rb, line 28</span>
28:       <span class="ruby-keyword kw">def</span> <span class="ruby-identifier">assert_dom_not_equal</span>(<span class="ruby-identifier">expected</span>, <span class="ruby-identifier">actual</span>, <span class="ruby-identifier">message</span> = <span class="ruby-value str">&quot;&quot;</span>)
29:         <span class="ruby-identifier">clean_backtrace</span> <span class="ruby-keyword kw">do</span>
30:           <span class="ruby-identifier">expected_dom</span> = <span class="ruby-constant">HTML</span><span class="ruby-operator">::</span><span class="ruby-constant">Document</span>.<span class="ruby-identifier">new</span>(<span class="ruby-identifier">expected</span>).<span class="ruby-identifier">root</span>
31:           <span class="ruby-identifier">actual_dom</span>   = <span class="ruby-constant">HTML</span><span class="ruby-operator">::</span><span class="ruby-constant">Document</span>.<span class="ruby-identifier">new</span>(<span class="ruby-identifier">actual</span>).<span class="ruby-identifier">root</span>
32:           <span class="ruby-identifier">full_message</span> = <span class="ruby-identifier">build_message</span>(<span class="ruby-identifier">message</span>, <span class="ruby-value str">&quot;&lt;?&gt; expected to be != to\n&lt;?&gt;.&quot;</span>, <span class="ruby-identifier">expected_dom</span>.<span class="ruby-identifier">to_s</span>, <span class="ruby-identifier">actual_dom</span>.<span class="ruby-identifier">to_s</span>)
33: 
34:           <span class="ruby-identifier">assert_block</span>(<span class="ruby-identifier">full_message</span>) { <span class="ruby-identifier">expected_dom</span> <span class="ruby-operator">!=</span> <span class="ruby-identifier">actual_dom</span> }
35:         <span class="ruby-keyword kw">end</span>
36:       <span class="ruby-keyword kw">end</span>
</pre>
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